THE MAGNETIC-STRUCTURE OF CEAL2 IS A NONCHIRAL SPIRAL

被引：47

作者：

FORGAN, EM

RAINFORD, BD

LEE, SL

ABELL, JS

BI, Y

机构：

[1] UNIV SOUTHAMPTON,DEPT PHYS,SOUTHAMPTON SO9 5NH,HANTS,ENGLAND

[2] UNIV BIRMINGHAM,SCH MET & MAT SCI,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 50期

关键词：

D O I：

10.1088/0953-8984/2/50/026

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The previously accepted spatially modulated magnetic structure of CeAl2 is shown to be correct. Neutron diffraction measurements in an applied magnetic field imply that the zero-field magnetic structure is spiral: however, the moments on the two Ce sublattices rotate in opposite senses. In our model, the magnitude of the Ce ordered moment varies little from site to site; a non-magnetic ground state for the Ce3+ ion is no longer required, and the extreme weakness of the harmonics is explained.

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页码：10211 / 10216

页数：6

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